Date: 26 November 2013
Secondary metabolites, 3D structure: Trivial name – sterigmatocystin
Copyright: n/a
Notes:
Species: A. discophorus, A. flavus, A. multicolor, A. nidulans, A. olivicola, A. parasiticus, A. rambellii, A. ustus, A. versicolor, Emericella nidulans, Emericella venezuelensisSystematic name: 7H-Furo[3′,2′:4,5]furo[2,3-c]xanthen-7-one, 3a,12c-dihydro-8-hydroxy-6-methoxy-, (3aR,12cS)-Molecular formulae: C18H12O6Molecular weight: 324.284Chemical abstracts number: 10048-13-2Selected references: Steyn M; Rabie C J Production of sterigmatocystin. Journal – Association of Official Analytical Chemists (1975), 58(3), 622-3. Tag, Andrew; Hicks, Julie; Garifullina, Gulnara; Ake, Charles, Jr; Phillips, T. D.; Beremand, Marian; Keller, Nancy (CORPORATE SOURCE Departments of Plant Pathology and Microbiology, Texas A and M University, College Station, TX 77843-2132, USA).Hamasaki, Takashi; Nakagomi, Takeo; Hatsuda, Yuichi; Fukuyama, Keiichi; Katsube, Yukiteru (Fac. Agric., Tottori Univ., Tottori 680, Japan). Agric. Biol. Chem., 44(5), 1149-55 (English) 1980.Frisvad JC, Skouboe P, Samson RA. Taxonomic comparison of three different groups of aflatoxin producers and a new efficient producer of aflatoxin B1, sterigmatocystin and 3-O-methylsterigmatocystin, Aspergillus rambellii sp. nov. Syst Appl Microbiol. 2005 Jul;28(5):442-53. Frisvad JC, Samson RA. Emericella venezuelensis, a new species with stellate ascospores producing sterigmatocystin and aflatoxin B1. Syst Appl Microbiol. 2004 Nov;27(6):672-80.Toxicity: Oral LD50 in albino male rat 166 mg/kg body-weight, intraperitoneal LD50 in male monkeys 32 mg/kg body-weight. It has been shown to cause liver and kidney damage including cirrhosis of the liver in primates. Hsieh DP, Atkinson DN. Bisfuranoid mycotoxins: their genotoxicity and carcinogenicity. Adv Exp Med Biol. 1991;283:525-32. Review. Produced by several Aspergillus spp, including Aspergillus nidulans, Aspergillus flavus, Aspergillus ustus and Aspergillus versicolor, the last of which is associated with the production of sterigmatocystin in cheeses stored at low temperatures for extended periods of time. It is also produced by Bipolaris sorokiniana, Monocillium nordinii, Chaetomium thielarioideum and Chaetomium udagawae.
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Patient with chronic productive cough, chest pain and ABPA, unable to take itraconazole or nebulised amphotericin B. Smokes at least 40 roll up cigarettes a day.
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Laryngeal aspergillosis, probably related to inhaled corticosteroids.
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VL-2397 (formerly known as ASP2397) is a novel antifungal drug initially developed by our partner, Astellas Pharma. This drug was isolated from a leaf litter fungus Acremonium species collected in a Malaysian national park. Astellas presented two posters at the 2014 ICAAC meeting which described the in vitro and the in vivo antifungal activities of this drug. The differentiating attributes from the preclinical data of VL-2397 include:
- A novel mechanism of action, with a potential to be complementary or synergistic with the existing classes of antifungals.
- Rapid fungal cell kill activity demonstrated in preclinical models, which was faster than marketed antifungals.
- Activity against azole-resistant fungal species.
- Low propensity for P450 drug-drug interactions.
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SCY-078, new orally available beta-1,3-d-glucan synthase inhibitor, Formely MK-3118.
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Pt DSM Community acquired primary Aspergillus pneumonia. Two x-rays taken on 02/02/2010 then 05/03/2010
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